But then those squares pop up, and suddenly the four lines are all moving in sync, appearing like the attached sides of a square moving in a circular motion! The illusion is very strong. This ...

In both of these examples, if you take away the centripetal force (break the string or drive on ice), the object would move in a straight line. Most textbooks use the centripetal force term and ...

Motion In A Plane Class 11 Revision Notes: CBSE Class 11 Physics Chapter - Motion in a Plane deals with the study of objects moving within a two-dimensional plane.It explores concepts like ...

Speed is a measure of how fast an object is moving. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

U of M communications partners say the study shows a new method to move objects with ultrasonic waves rather than by physical contact or through an internal energy source like a battery.

Speed is a measure of how fast an object is moving. Find out more with BBC Bitesize. For students between the ages of 11 and 14.